When in linear mode, the result is in volts. The ampcor function is used to compensate for frequency-dependent amplitude variations. When ampcor is on, the current correction values are added to all measurement results. Up to pairs of frequency- amplitude correction points can be entered.
Between points, the correction values are interpolated. Parameters number integer from 0 to When in linear mode, the results are in volts. The attenuation can be set to 0 dB only by numeric data entry, and not by using the knob or step keys.
Parameters AUTO sets amplitude units to coupled mode. These functions can be recoupled individually or all at once. If the traces are in clear-write or max-hold mode, the mode is changed to view. The current contents of the trace remain in the trace but are not updated. The powers are combined to provide a calculation of the leakage power.
Page Cf Center Frequency The span remains constant, unless it is limited by the spectrum analyzers frequency range. The start and stop frequencies change as the center frequency changes.
Parameters number real from 0 to 2. This mode sets each element of the chosen trace to the bottom-screen value; then new data from the detector is put in the trace with each sweep. The spectrum analyzer must be in external-mixer mode in order for this command to work. Parameters number real from 15 to This mode enables another sweep at the completion of the current sweep once the trigger conditions are met.
AC coupling protects the input of the analyzer from damaging dc signals, while limiting the lower frequency-range to kHz although the analyzer will tune down to 0 Hz with signal attenuation. If no marker is on, DEMOD automatically places a marker at the center of the trace and demodulates the frequency at that marker position. The default value is 1 second.
When the frequency span equals 0 Hz, demodulation is continuous, except when between sweeps. This is normally a coupled function, in which the spectrum analyzer selects the appropriate detector mode. Four modes are available: normal, positive, negative, and sample. If video averaging or marker noise functions are on, or if the resolution bandwidth is greater than or equal to Hz and the video bandwidth is less than Hz, the detector is set to sample mode.
The default value is 0 dBm. Dependent on the selected amplitude units. UP or DN changes the display line by one vertical division. Sending a TS command before DONE ensures that the spectrum analyzer will complete a full sweep before continuing on in a program. An error code of "0" means there are no errors present.
For a list of error codes and descriptions, refer to Chapter 9. For best results, enter error data immediately after querying for errors. This value can be reset only by a HAgilent Technologies service center.
Page Extmxr External Mixer Mode It does not switch the analyzer from internal to external mixing. Query Response Figure Page Fa Start Frequency The center frequency and span change with changes in the start frequency. UP or DN increments in 10 percent of span. If the stop frequency is less than the start frequency, the start frequency decreases to equal the stop frequency minus Hz.
The maximum length of any of the traces is points. Page Language Reference FFT Fast Fourier Transform The FFT algorithm assumes that the sampled signal is periodic with an integral number of periods within the time-record length that is, the sweep time of the analyzer.
It does not affect the frequency range of the sweep, nor does it affect relative frequency readouts. Table When the time-gating function is turned on, the spectrum analyzer activates the time gate circuitry according to the parameters controlled by gate length GL , gate delay GD , and the gate trigger input. In the level mode, the gate follows the trigger input level.
If the gate control GATECTL is in the edge mode, the gate delay timer can be triggered on either a positive or negative edge of the trigger input. If no function is active, no operation takes place. Page Hnlock Harmonic Number Lock When the FS command is activated, the span is limited to the frequency band of the selected harmonic.
When in linear mode, querying LG returns a "0". The 1 dB per division and 5 dB per division scales are not available for sweep times less than 30 ms. Measurements made on a linear scale can be read out in any amplitude units. Default units are in milliamps. If the spectrum analyzer is set to sweep and make measurements continuously, the command returns CONTS.
This function employs the negative peak detector refer to the DET command. If no marker is active, MKA places a marker at the center of the trace and returns that amplitude value. When the command is used manually, a peak search is automatically performed, and the bandwidth of the largest signal on-screen is displayed in the message area. When using zero span, data entered or output is always interpreted as microseconds US.
This command is useful when making the occupied channel power measurements. Page Mkf Marker Frequency Default units are in hertz. Parameter number real from 0 to 2. If no marker is active, MKFC places a marker at the center of the trace and counts that marker frequency. Refer to the MKFC command. Parameter number 1 Hz to 1 MHz, in powers of ten. This command is useful when making occupied channel power measurements.
When in zero span, querying MKN returns the center frequency. The default is HI highest point. See also the MKPX command. Any portion of a peak that falls below the peak threshold is used to satisfy the peak excursion criteria.
For example, if the peak excursion is 10 dB, the amplitude of the sides of a candidate peak must descend at least 10 dB in order to be considered a peak. UP or DN 1 vertical division of the display.
If no marker is active, MKRL places a marker at the center of the trace and uses that marker amplitude to set the reference level. The start frequency is set equal to the frequency of the left-most marker and the stop frequency is set equal to the frequency of the right-most marker. Default units are seconds. Parameter number real from 0 to the current sweep time. After every successive sweep, MKTRACK performs a peak search MKPK , and then changes the center frequency of the spectrum analyzer to the frequency of the peak, thus maintaining the marker value at the center frequency.
The attenuator automatically adjusts to ensure that this level is not exceeded for signals less than the reference level. This function employs the positive peak detector refer to the DET command. This function subtracts trace B from trace A, offsets the result by the value of the normalized reference position NRL , and displays the result in trace A.
This function is a trace-offset function enabling the user to offset the displayed trace without introducing hardware-switching errors into the stimulus-response measurement.
The dB value of the normalized reference-position is equal to the normalized reference level. Set the plotter address to 5, select the P1 and P2 positions, and then execute the plot command. P1 and P2 correspond to the lower-left and upper-right plotter positions, respectively.
Parameters ANNT plots only the annotation. The data is output in HP raster graphics format. When PSTATE is on, the registers are "locked"; the data in them cannot be erased or overwritten, although the data can be recalled. The command then computes the bandwidth equal to a percentage of the total power. This is normally a coupled function that is selected by the span setting according to the ratio selected by the RBR command. If no ratio is selected, a default ratio 0. Numbers are rounded to the nearest bandwidth.
UP or DN increments in a 1, 3, 10 sequence. When the frequency span is changed, the resolution bandwidth is changed to satisfy the selected ratio. Parameters number integer from 0 to 9.
Registers 8 and 9 are used by the normalization routine. Parameters recalls the trace data to trace A. Page Rclthru Recall Thru B. The instrument state is also set to the stored thru-reference state. Range level functions the same as reference level. The reference level is the top horizontal line on the graticule.
For best measurement accuracy, place the peak of a signal of interest on the reference-level line. UP or DN increments by one vertical division in log mode, and in a 1, 2, 5, 10 sequence in linear mode. To calibrate the reference level, connect the MHz calibration signal to the RF input. Dac sensitivity is 0. The offset is in dB, regardless of the selected scale and units. The offset can be useful to account for gains or losses in accessories connected to the input of the analyzer.
Each service request has a corresponding bit number and decimal equivalent of that bit number, as shown in Table on page There is a total of eight save-trace registers in which to store trace data from traces A and B. This mode allows only one sweep when trigger conditions are met. When this function is active, an S appears on the left edge of the display. The center frequency does not change with changes in the frequency span; start and stop frequencies do change.
Setting the frequency span to 0 Hz effectively allows an amplitude-versus-time mode in which to view signals. When this function is on, a dashed line indicating the squelch level appears on the display. A marker must be active and above the squelch line for demodulation to occur. Once enabled, this adjustment is made in digital-to-analog-converter DAC values from 0 to Parameters number real from 0.
The output power of the tracking generator is swept according to the sweep rate of the spectrum analyzer. Parameters number real from 0 dB to Page Srctkpk Source Tracking Peak Tracking peak is not necessary for resolution bandwidths greater than or equal to kHz. A thru connection should be made prior to peaking in order to ensure accuracy.
This command allows you to force a service request and test a program designed to handle service requests. This is normally a coupled function.
The center frequency is adjusted by the selected step size. Page Figure Ss Query Response 25 to UP or DN increments in a 1, 2, 5, 10 sequence.
This is normally a coupled function that is automatically set to the optimum value allowed by the current instrument settings. Alternatively, you can specify the sweep time. STB is equivalent to a serial poll command. The state of the thru information is stored in state register number 9. In stimulus-response mode, auto-coupled sweep times are usually much faster for swept-response measurements.
Stimulus-response auto-coupled sweep times are typically valid in stimulus-response measurements when the system frequency span is less than 20 times the bandwidth of the device under test. See also MKPT. MKPT does not clip data below its threshold. When a trace is in max-hold mode, if the threshold is raised above any NOTE of the trace data, the data below the threshold will be permanently lost. UP or DN increments by one vertical division.
A title can be up to two rows of sixteen characters each and can include the special characters shown in Table on page Selected trigger conditions must be met in order for a sweep to occur. The available trigger modes are listed below. When any trigger mode other than free run is selected, a T appears on the left edge of the display. The available data formats are parameter P format, binary B format, A-block format, I-block format, or measurement units M format.
This ensures that the instrument is set to a known condition before subsequent commands are executed. Video averaging smooths the displayed trace without using a narrow bandwidth.
UP or DN increments by 1. This is normally a coupled function that is selected according to the ratio selected by the VBR command. Thus, when the resolution bandwidth is changed, the video bandwidth changes to satisfy the ratio. A dashed line appears on the display to indicate the approximate level. Page Options Tracking generator Option provides a built-in kHz to 2. Option is only available on the Agilent E and the EC. It is not available with Option Alternate sweep output Page Options and Accessories Options Delete mass memory module Option deletes the module used to expand user memory which allows storage and execution of downloadable programs DLPs and limit lines.
Delete IF input and video output Option deletes the front-panel IF input connector and the rear-panel video output connector. The Agilent It has 1. Agilent W millimeter harmonic mixer is a broadband harmonic mixer used to extend the frequency range from 75 GHz to GHz. Page Options and Accessories Accessories Available Agilent A Phase Noise Measurement Utility is a software measurement utility that makes it easy to use the spectrum analyzer to make phase noise measurements.
The transit case protects your instrument from hostile environments, shock, vibration, moisture, and impact while providing a secure enclosure for shipping. Blank Display If your display is blank, before calling Agilent Technologies or returning the analyzer for service, please make the checks listed below.
The "Power Requirements" section includes more detailed information about making these checks. If there is a hardware problem, you can repair it yourself or return the analyzer to Agilent Technologies for repair. A powerful feature of the TAM is the automatic fault isolation routine. If a problem with the spectrum analyzer is suspected, in most cases automatic fault isolation can determine whether or not a fault exists in the analyzer.
The mass memory module should be attached to the rear panel. Page Replacing The Battery 2. Remove the two screws securing the small panel labeled with a battery. Do not remove the bottom screw.
Remove the battery and replace it, observing proper polarity. Use the following Agilent Technologies battery, part number: Battery Information Battery part number The printer or plotter must be connected to the spectrum analyzer GPIB bus. No other controller can be on the bus when doing direct plotter or printer dumps. Full performance tests are included in the calibration guide to identify problems and verify the repair.
Several service tags are supplied at the rear of this chapter. Never use styrene pellets in any shape as packaging materials. They do not adequately cushion the equipment or prevent it from shifting in the carton. Agilent Technologies service personnel have access to complete records of design changes to each type of equipment, based on the equipment serial number.
Therefore, all work performed on assemblies consisting of electronic components should be done at a static-free work station. Page Static-Safe Accessories Table lists static-safe accessories that can be obtained from Agilent Technologies by ordering the part numbers shown.
These error codes are provided for service personnel who troubleshoot the spectrum analyzer. However, they also alert the user to errors in spectrum analyzer function or use. If an error message remains displayed, the following actions are suggested: Error Action ERR NO? This command cannot be queried. Not a valid peak search parameter. Instrument service is required. ERR Demod data for calibration is bad. This manual has been a great help to us, the best price around and instant download.
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Add to wishlist. Guaranteed Safe Checkout. Please consult your local distributor for those items you may require. Materials and specifications are subject to change without notice. Operators and maintenance personnel must read this manual before operating or maintaining this machine. This manual should be kept near the machine for reference and periodically reviewed by all personnel who will come into contact with it.
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If not, where is the cheapest place to buy them? Sep 5, 2. Joined Nov 7, Messages 19 Tractor Mahindra Sep 5, Thread Starter 3. Sep 5, 4. On the side of the fuse box there is another small fuse cover, open it, turn the starter switch to the on position, then take a fuse and briefly cross the terminals under the cover you opened. Then turn the switch back to the off position and the service alarm should be reset. The alarm is telling you the 50 hour service is due.
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